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 $A3/163:   Bit Counter Tape Read or Write
            Serial Bus EOI (End Of Input) Flag

  Used by <A HREF="MAPJD.HTM">Jiffy-DOS</A>: LDFLG/QFLAG

   Used in all disk access and Load routines.

  Used by <A HREF="MAPBB.HTM">ByteBoiler</A>: Temporary

Kernal-Reference:

 BIT $A3     : <A HREF="ROMED40.HTM">$ED4C</A>
 DEC $A3     : <A HREF="ROMF92C.HTM">$FA00</A> <A HREF="ROMFBCD.HTM">$FC0E</A>
 LDA $A3     : <A HREF="ROMF92C.HTM">$F9C3</A> <A HREF="ROMF92C.HTM">$FA18</A> <A HREF="ROMFBCD.HTM">$FC10</A>
 LDX $A3     : <A HREF="ROMF92C.HTM">$F969</A>
 LSR $A3     : <A HREF="ROMED0C.HTM">$ED1E</A>
 ROR $A3     : <A HREF="ROMED0C.HTM">$ED17</A>
 STA $A3     : <A HREF="ROMFB97.HTM">$FB99</A>

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